Answer:
Step-by-step explanation:
B. 60
f(-9) = 279
f(x) = 4x^2 + 7x + 18
f(-9) = 4(-9)^2 +7(-9) + 18
= 4(81) - 63 + 18
= 324 - 63 + 18
= 279
16/5
3.2 = 3 + 0.2= 3+2/10=3+1/5=16/5
pls mark as brainliest